Pulp mill recovery system

Details Pulp mill recovery system Pulp mill recovery system

D - Textiles, Paper

21

C

9/36.2

D21C 11/00 (2006.01) D21C 11/12 (2006.01)

Patent

CA 1061059

PULP MILL RECOVERY SYSTEM ABSTRACT OF THE DISCLOSURE A method of increasing the chemical recovery capacity of a Kraft Recovery Furnace by injecting solid pellets of sodium sulphate and sodium carbonate directly onto the char bed in the reducing zone of the furnace while maintaining the temperature and reducing atmosphere in this zone thereby to form a smelt containing sodium sulphide and sodium carbonate from the injected pellets. These pellets may be produced from a further quantity of black liquor in an auxiliarly incinerator such as a fluid bed combustion unit. This inven- tion permits increasing the recovery capacity of a furnace without necessitating the construction of a new Recovery Furnace.

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